Glass-blowing machine.



No. 659,290. Patented 00L 9, |900.

L. H. CULBURN.

GLASS BLOWING MACHINE.

(Applicatiop filed: Mar. 30, 189B.)

No. 659,290; Patented uct. 9, |900. L. H. coLBunN.

GLAss BLowmG MACHINE.

(Application led Max-.'30, 1898.)

(l0 Nudel.) 2 Sheets-#Sheet 2.

'UNITED STATES 1PATENT OFFICE.

LESLIE H. OOLBUHMO-F TOLEDO, OHIO, ASSIGNOR To THE TOLEDO GLASS COMPANY,OF SAME PLACE.

G LASS-BLOWING IVIACHIINE.

SPECIFICATION forming part of Letters Patent No. 659,290, dated October9, 1900. Application filed March 30, 1898. Serial No. 675,655. (Nomodel.)

T @ZZ wwm i2? may OOTwWb: valve or other controlling device for the air.

Be it known that I, LESLIE H. COLBURN, a With this manually-operatingcontrolling decitizen of the United States, residing at Tovice I havedevised means so that the operator ledo, in the county of Lucas andState of Ohio, may control the Opening of the valve, as well 5 haveinvented certain new and useful Imas the time in which it shall open,from a parprov'ements in Glass-Blowing Machines, of tial to a fullpressure and the time in which which the following is a specification,referit shall remain open. ence being had therein to the accompanying Grepresents the air-supply pipe from any drawings. A A 4 Y i suitablesource of air-supply, and this has at 6o 1o The invention consists inthe construction its lower end a coupler G to receive the end of aglass-blowing machine, and particularly of the blowpipe H, which may bethensual in the'following: first, in means for controlblowpipe and whichis supported by any suitling the air-supply to the article to be blown,able means in proper relation to the mold and which is controlled by amanually-operated the air-supply. Ihaveshown it provided with I5means,having devices which control variation theiusual enlargement a',resting in a bearing of pressure by varying the time interval rein theframe of the machine. quired to open the valve to its full pressure I isa controlling-valve which controls the and means for varying the timeinterval of `air-supply in the pipe G, and this valve is of blowing;second, in the construction of means ythe construction shown in Figs. 2and 3. The 7o 2o for enabling the operator to determinel the valve isshown as a plug-valve, having an inamount of pull required to give anydesired let-port a, the exit-port b, and the-by-pass c time interval;third, in the construction, arin its plug and having suitable inletl andexit rangement, and combination of the various ports adapted to registerwith the ports a and parts, all as more fully hereinafter described.y 'bin the casing, and the exhaust-port d for 75 z 5 In the drawings, Figure1 is a front elevathe exhaust of the air from the blowpipe tion of amachine embodying my invention, through the by-pass when the valve isshut showing the dash-pot partlyin section. Figs. O. In Fig. 2 the valveis shown closed to 2 and 3 are sections through the controllingtheadmission of air into the blowpipe, and valve, Showing its operatingmechanism in the blowpipe is connected with the atmos- 8o 3o elevationand in different positions at differphere through the by-pass c and theport d.

ent periods of operation. In Fig. 3 the valve is shown with the ports wbA isasuitable supporting-frame for the opalined with the inlet and exitports in the erating parts of the machine. casing, as when it issupplying air to the B is a table which supports the molds C, blowpipe.

3 5 which are opened by any suitable means, such The coupler G is ofsuch construction as to as by operating the lever D, which has suitgraspthe blowpipe, so that when rotary moable connection with themold-sections. l Betion is imparted to the coupler the blowpipe low the.mold is a tank E, which receives the will also be turned. 'I have shownthe coupwater from the spraying-nozzle F and which ler rotated by meansof suitable gearing J, 9o 4o has suitable means for carrying away thedriven from any suitable source of power. water therefrom. Thesepartsmay be of any The parts being arranged as thus described, desiredconstruction, as their particular conthe operator gets the necessarygather on the struction forms no part of my present invenend of theblowpipe H, inserts it into the mation. chine with the upper end of thecoupler Gr. 45 In the present state of the art machines have I haveshown the coupler G'slidingly engagbeen constructed for blowing glass inwhich ing in bearings-upon the air-supply pipe and the valve forcontrolling the air-supply was raising and lowering through suitableconopened and closed automatically by means of necting-levers by meansof the pull-rod K, so power machinery. In my present device I that theoperator may insert the blowpipe latroo 5o desire to construct a machinein which the erally into the proper position and then opoperator shallhimself directly operate the erate the rod K and lower the coupler ontothe blowpipe, having previously closed the mold-sections by operatingthe lever D. In this position of the parts the blowpipe is open to theatmosphere through the by-pass c and the ports d. The operator nowadmits air to the blowpipe to blow the article by turning the valve I.This could be done by hand; but it would be practically impossible toget the time interval for blowing properly regulated and also impossibleto get the gradual increase in the air-pressure, which is desirable inglass-blowing, except by the interposition of some controlling meansapplied to the valve or the air-supply. I have shown the followingdevice as one means of effecting this controlling of the air-supply.

L is an arm secured to the plug of the valve.

M is a lever journaled on the plug beside the securing-point of the armL.

N is a latch or hook on the lever M, engaging a pin N on the arm L tolock the two together.

O is a hand-pull, by means of which the operator may draw down the leverM and with it the arm L, and thereby open the valve.

P is a dash-pot having a piston P' therein with a restricted port Q,through which the liquid below the piston may pass, to determine thetime interval required to lower the piston a definite distance. Thepiston is connected to the lever M by a connecting-rod R. Thus theoperator pulling on the pull O can only slowly move down the arm Lthrough the connections described, according to the speed with which thefluid can pass through the port Q, and thus will gradually allow a lightpressure to enter the blowpipe, and then as the valve opens fully thefull pressure of air will be admitted therein.

When the desired opening of the valve has been effected and the desiredtime interval of blowing has elapsed, the latch N will strike upon a pinS, disengage the latch from the arm L, when the spring T willimmediately draw the arm back to its initial position, (shown in dottedlines in Fig. 3,) immediately closing the valve and restoringatmospheric pressure in the blowpipe in the article to be blown. Themold can then be opened and the blowpipe removed in the usual manner.

The piston P is provided with a suitable enlarged port Q, so as toenable the piston to be quickly returned when the operator pushes u p onthe pull-rod O to restore the parts to their normal position.

I may and preferably do make the pin S adjustable in itssupporting-bracket S, so that the length of the stroke of theoperating-lever may be controlled, and thereby the time interval more orless graduated.

I may and preferably do provide a means for indicating to the workmanthe amount of pull that is required approximately to give greaterexactness to the time interval. That I have shown effected by thefollowing mechanism: The pull-rod O is made in two parts, and betweenthose two parts is placed a spring U, and the parts are provided withindices or pointers V, one of which may be made adjustable by anysuitable means. The operator then may pull with sufiicient power uponthe pull-rod to cause the spring to be com# pressed until the twopointers are side by side, which will indicate a pull sufficient, forinstance, to require six seconds to pull the lever M down. By adjustingthe pointers nearer together or farther apart different degrees of pullmaybe indicated.

With a strictly manually-operated valve to control the time intervalwith great nicety and practically as line as with an automatic machine,in this device, which is intended to be operated by the man instead ofby power, I desire to avoid any unnecessary exertion on the part of theworkman in any operation, and therefore instead of dipping the molds, ashas generally been done heretofore in glass-blowing machines, I sprinklethe pastelined surfaces through the nozzle F, previously mentioned,which may be provided with any suitable means of controlling thewatersupply.

What I clailn as my invention isl.. In a glass-blowing machine, thecombination with the device to supply air to the article to be blown, ofa controlling device therefor, and a manually-operated actuating devicefor said controlling device having means for aiecting the speed of thecontrolling device.

2. In a glass-blowing machine, the combination with the device to supplyair to the article to be blown, of a controlling device for suchair-supply, a manually-operated actuating device for said controllingdevice, and means for timing the movement of the controlling device.

3. In a glass-blowing machine, the combination with the device to supplyair to the article to be blown, a valve controlling the same, means foropening said valve directly by the power of the operator and a retardingdevice applied to such opening means.

4. In a glass-blowing machine, the combination with the blowpipe and adevice to supply air thereto, a controlling device for theair-supplyhaving a timed period of operation, means for shutting oif saidair-supply at the end of such period and means for automaticallyrestoring atmospheric pressure in the blowpipe on the shutting olf ofthe air-supply.

5. In a glass-blowing machine, the combination with the controllingdevice for the airsupply, of an actuating device therefor, comprisingthe lever M, the arm L adapted to be moved in one direction by the leverand means for disconnecting the arm from the lever returning itindependently thereof, substantially as described.

6. In a glassblowing machine, the combination with the air-supply pipe,of a valve, the arm L connected thereto, the lever M beside the arm L, ahook connecting the two,

IOO

a spring T connected to the arm and disengaging device for the hook atthe end of the movement of the lever and a pull device for operating thelever.

7. In a glass-blowing machine, the combination with thecontrolling-valve, having operating means adapted to manually move thesame, comprsinga lever M, a pull-rod and a retarding device, comprisinga dash-pot, and a piston working therein with a restricted port,substantially as described.

8. In a glass-blowing machine, the combination with the air-controllingdevice, of'a manually-operated Vactuating means therefor, a retardingdevice for said actuating means, and means for indicating the pullrequired for a given time interval, substantially as described.

9. Ina'glass-blowing machine, the combination with the con trollingdevice for the airsupply, of an actuating device and a retard- LESLIE H.COLBURN.

Witnesses:

JAMES WHITTEMORE, O'r'ro F. BARTHEL.

